Trimming



Sept. 27, 1927.

A. A. RUPPERT TRIMMING l Filed Se '15. l1. 1926 INI/EN TOR. T/om/ appert Patented Sept. 27, 1927.

UNITED STATES i'nsia PATENT OFFICE.

ALBERT ANTHONY RUPPERT, OIF-DETROIT, MICHIGAN, ASSIGNOR TO GENERAL MOTORS CORPORATION, F DETROIT, MICHIGAN, A CORPORATION 0F DELAWARE.

TRIMMING.

Application ined september 11, 1926. serial No. 134,765.

This invention relates to the trimming and upholstering of automobile bodies, and particularly automobile doors. n

The prevailing trimming material for closed automobile bodies is broadcloth, ve-

lour, mohair and plush. It is customary to use a heavy cardboard, strawboard or fibre board backing for the t-rimming material that is used on the door, as ordinarily the l0 door well is open between the lock board and the bottom rail of the door.

Heretofore it has been customary to nail this trimming together with the backing to which the trimmmg is glued to the door by l5 means of substantially headless brads. These brads are nailed right through the pile and then an awl or hooked 'instrument is taken and the outer ply of the trimming is pulled over the end of the brad so that the brads are concealed. yHowever, it is still possible to the eye of a close observer to see where the brads have been pulled through the material` This is especially true where the higher grade material known as broadcloth is used,

as this material has no ile and the holes made bythe brads will e apparent unless some kmd of'gimp or binding is used to cover up the holes. Furthermore, the brads are practically headless and it will be apparent that the trimming can be easily pulled oli' and very often does come oft' the brad.

j It is the object of the present invention to provide a trimming nailing strip which not only entirely elimmates t e pulling of the material over the end of the brads, but

also greatly strengthens the engagement between the door st-ile and further reinforces the, edge of the bre or strawboard underneath. j

Referring to the drawings:

Fig. l is a perspective of an automobile door equipped with the new type of trim ming strip.

Flg. 2 is a fragmentary perspective of a door stile showing the trimming and the strip in position.

Fig. 3 is a fragmentary cross section vof the trimming before it is applied to the door.

Fig. 4 is a fragmentary sectional perspective of the strip itself.

Fig.`5 is a similar view of a modified form. i

The strip is a sheet lnetal strip which can' be made in continuous lengths on machines for rolling or drawing metal channels. Primarily it is a metal channel strip forming the channel a, which receives the reinforcing board of libre board, strawhoard, or cardboard, which is designated b. The trimming material o, which may be velour, broadcloth, plush or any other suitable ma? terial is glued' around the strip after the channel has received the edge' of the board reinforcement. This channel strip is preferably doubled to two-ply thickness on the side d, and the tacks e are clamped in between the plies of the double thickness by means of thetwo plies engaging the head l of the tack. This is shown in Fig.` 3.

However, a single channel strip ma be used as shown in Fig. 5, and in place oty the clamping tack heads by means-of a double ply arrangement, these heads may be spot- Welded in place. It will readily be seen that the channel strip may be fitted over the edge ofU the reinforcing board, the trimming turned over the channel strip land glue the channel strip on the board. The trimming may then be easily nailed to the door stile lock board or any other adjacent wooden part in a way that it will be little likely to come off.

The pulling of the trimming off the brad heads is entirely eliminated as an operation, and furthermore the holes in the cloth are entirely eliminated Where they would he especially objectionable in broadcloth and other plain fabrics. e

What I claim is: 1. A nailing strip for trimming material, comprising a continuous' channel strip with a channel opening arranged to t over the reinforcing board for the trimming and receive the folded trimming on the outside of the channel, said channel having aliixed t0 one side thereof a plurality of nailing members so that when the channel, the reinforcing board strip and the trimming are fitted together the same may be nailed to the su port with the nailing devices completelj1 concealed.

2. A nailing strip for trimming material, comprisin a sheet metal channel stri having a doule ply at one side of the c annel and tacks having their heads secured between the two plies and projecting right angularly from the side of the channel, the

opening in the channel arranged to fit over the edge of the reinforcing board while the trimming fits around the outside of the chanu.

' board and the nailin l0, curable as a unit to t e un erlying support ieg-comprising s. reinforcing board, a metal strlp carrying nalls on one side secured to' the reinforcing boa-rd, and a. trimm'ng cloth folded aroun n o the edge lof the rei rcing by driving the nails thereinto.

4. Aj trimming for automobile bodies, 'comstri the whole se-" prising a reinforcing board, a metal channel strip fitting around the edge of the board and carrying nails on the inner wall of the channel, and trimming material fitting around the channel strip and the board, the

Whole unit being securable to the underlying support by driving the same into the support. l

In testimonywhereof I have aixed my signature.

ALBERT ANTHONY RUPPERT, j 

